Merged revisions 352863 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/10

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  r352863 | alecdavis | 2012-01-27 13:08:03 +1300 (Fri, 27 Jan 2012) | 19 lines
  
  Merged revisions 352862 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r352862 | alecdavis | 2012-01-27 13:05:30 +1300 (Fri, 27 Jan 2012) | 12 lines
    
    rfc4235 - Section 4.1: Versions MUST be representable using a non-negative 32 bit integer.
    
    If a BLF subscription exists for long enough, using %d may print negative version numbers.
    Unlikely, as 2^32 at 1 update per second is ~137 years, or half that before the versions number started going negative.
    
    Tested with Asterisk 1.8.8.2 with Grandstream phones.
     
    alecdavis (license 585)
    Tested by: alecdavis
     
    Review: https://reviewboard.asterisk.org/r/1694/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@352864 65c4cc65-6c06-0410-ace0-fbb531ad65f3